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Liquid crystal display and backlight module thereof

A liquid crystal display and backlight module technology, which is applied in instruments, optics, nonlinear optics, etc., can solve the problems of insufficient forward brightness of liquid crystal displays, inability to solve heat dissipation problems, and high leakage current of lamps

Active Publication Date: 2007-08-29
AU OPTRONICS CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, since the opening 23 arranged on the reflector 11 is located on both sides 112 of the reflector 11, the opening 23 is far away from the lamp tube 13, and the convection direction generated cannot effectively reduce the temperature of the intermediate lamp tube. The generated heat cannot be dissipated evenly, so the heat dissipation problem cannot be solved, causing the fluorescent tubes to fail to reach the optimum working temperature, which reduces the luminance produced by the backlight module
[0007] In addition, the existing liquid crystal display has always had the problem of insufficient forward brightness, and the leakage current of the lamp tube is relatively high, so that the luminous efficiency of the lamp tube cannot be optimized

Method used

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  • Liquid crystal display and backlight module thereof
  • Liquid crystal display and backlight module thereof
  • Liquid crystal display and backlight module thereof

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Embodiment Construction

[0051] As shown in FIG. 2 , the liquid crystal display 1 includes an upper and lower housing 3 , a liquid crystal panel 4 and a direct-type backlight module 30 , the liquid crystal panel 4 is arranged in the housing 3 , and the backlight module 30 is arranged in a position relative to the liquid crystal panel 4 Among the casing 3, the present invention mainly aims at improving the heat dissipation effect of the backlight module 30 and the brightness of the reflected light, so the description of other components in the liquid crystal display is omitted.

[0052] 3 shows an exploded perspective view of the backlight module 30 of the present invention. The backlight module 30 includes a light diffusion plate 33 , a bottom plate 31 , a support platform 34 , multiple strip light sources (light tubes) 36 and multiple reflectors 37 .

[0053] In the following, the structures of the light diffusion plate 33 , the base plate 31 , the supporting platform 34 , the plurality of elongated l...

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Abstract

The present invention is one kind of LCD and its back light module. The back light module includes one underplate and several strip light sources. The underplate has several parallel heat radiating slots penetrating the underplate. The strip light sources are parallel to the heat radiating slots and the heat the light sources produce is escaped via the heat radiating slots.

Description

technical field [0001] The invention relates to a liquid crystal display and its backlight module, in particular to a direct-lit liquid crystal backlight module, which can effectively improve heat dissipation efficiency to meet higher luminance requirements. Background technique [0002] The liquid crystal display unit in a general liquid crystal display uses a backlight module to provide the required light source, and in terms of the type of the backlight module, it can usually be divided into two categories: edge light type and direct light type . Since the present invention is aimed at improving the direct-type backlight module, only the structure of the direct-type backlight module will be described below, and the description of the edge-type backlight module will also be omitted. [0003] In Japanese Patent Laid-Open No. 2001-297623 as shown in Figure 1, a kind of backlight device 10 is proposed, including a reflector 11, a light diffusion plate 12, a plurality of fluo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357G02F1/1335
Inventor 吴志刚王明发
Owner AU OPTRONICS CORP